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Thermal treatment process capable of improving amplitude of cutter bar of ultrasonic cutter

An ultrasonic knife and knife shank technology is applied in the field of heat treatment technology to achieve the effects of improving alloy strength, reducing two-way tensile stress and easy operation.

Active Publication Date: 2018-12-18
HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above three types of heat treatment methods all have limitations, and it is necessary to study a new heat treatment system based on them to improve the ultrasonic properties of Ti-6Al-4V alloy.

Method used

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  • Thermal treatment process capable of improving amplitude of cutter bar of ultrasonic cutter
  • Thermal treatment process capable of improving amplitude of cutter bar of ultrasonic cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 and figure 2 As shown, the tool bar is made of Ti-6Al-4V alloy material, and the shape of the tool bar is a stepped horn. The center of the tool bar in the length direction is the luffing node. Diameter shank, the diameter ratio of the small diameter shank to the large diameter shank is 5:2, and the node is designed with R=0.5.

[0045] Its heat treatment methods include:

[0046] (1) Raw material preparation: Ti-6Al-4V hot-rolled annealed bar with a diameter of 8.05mm and a length of 100mm, in which the contents of Ti, Al, and V elements are 89.62%, 6.05%, and 4.13%, respectively, and the impurity content is 0.4 wt.%; the tensile strength is 1005 (Mpa), the elongation is 14.5%, and the reduction of area is 34%;

[0047] (2) Solution treatment: heat the sample to 930°C at a heating rate of 95°C / min, keep it warm for 60s, and then place the sample in air to cool rapidly to room temperature;

[0048] (3) Aging treatment: Heat the above-mentioned soli...

Embodiment 2

[0052] Such as figure 1 and figure 2 As shown, the tool bar is made of Ti-6Al-4V alloy material, and the shape of the tool bar is a stepped horn. The center of the tool bar in the length direction is the luffing node. Diameter shank, the diameter ratio of the small diameter shank to the large diameter shank is 5:2, and the node is designed with R=0.5.

[0053] Its heat treatment methods include:

[0054] (1) Raw material preparation: Ti-6Al-4V hot-rolled annealed bar, with a diameter of 8.05mm and a length of 100mm, in which the contents of Ti, Al, and V elements are 89.62%, 6.05%, and 4.13%, respectively, and the impurity content is 0.4wt.%; the tensile strength is 1005 (Mpa), the elongation is 14.5%, and the reduction of area is 34%;

[0055] (2) Solution treatment: heat the sample to 940°C at a heating rate of 105°C / min, keep it warm for 60s, and then place the sample in air and cool it rapidly to room temperature;

[0056] (3) Aging treatment: Heat the above-mentioned...

Embodiment 3

[0060] Such as figure 1 and figure 2 As shown, the tool bar is made of Ti-6Al-4V alloy material, and the shape of the tool bar is a stepped horn. The center of the tool bar in the length direction is the luffing node. Diameter shank, the diameter ratio of the small diameter shank to the large diameter shank is 5:2, and the node is designed with R=0.5.

[0061] Its heat treatment methods include:

[0062] (1) Raw material preparation: Ti-6Al-4V hot-rolled annealed bar, with a diameter of 8.05mm and a length of 100mm, in which the contents of Ti, Al, and V elements are 89.62%, 6.05%, and 4.13%, respectively, and the impurity content is 0.4wt.%; the tensile strength is 1005 (Mpa), the elongation is 14.5%, and the reduction of area is 34%;

[0063] (2) Solution treatment: heat the sample to 950°C at a heating rate of 112°C / min, keep it warm for 60s, and then place the sample in air and cool it rapidly to room temperature;

[0064] (3) Aging treatment: Heat the solid-solution ...

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Abstract

The invention discloses a thermal treatment process capable of improving the amplitude of a cutter bar of an ultrasonic cutter. The thermal treatment process is characterized by comprising the following steps of: air-cooling the cutter bar, made of a Ti-6Al-4V alloy material, of the ultrasonic cutter to the room temperature after being heated to a temperature being 10-40 DEG C lower than a beta phase change temperature at a heating speed higher than or equal to 95 DEG C / min to preserve heat; and air-cooling the cutter bar to the room temperature after heating the cutter bar to a temperature 490-530 DEG C at a heating speed higher than or equal to 25 DEG C / min. The thermal treatment process is optimized, content of a phase alpha and a phase beta in alloy matrix is controlled, and transmission efficiency, in the matrix, of ultrasonic waves is greatly improved; and meanwhile, the structure of the cutter bar is combined, so that stress focus at a node is effectively relieved, transmission,in the cutter bar, of the ultrasonic waves is facilitated, and the amplitude of a tip of the cutter bar caused by ultrasonic waves is increased, and therefore, the amplitude of the tip of the cutterbar is improved by 26.5% at most in comparison with the amplitude before thermal treatment. The thermal treatment process is simple, is convenient to operate, can greatly improve the amplitude of thecutter bar of the ultrasonic cutter, and is suitable for application of the cutter bar of the ultrasonic cutter.

Description

technical field [0001] The invention discloses a heat treatment process for increasing the vibration amplitude of an ultrasonic knife rod. The invention belongs to the technical field of metal material heat treatment. Background technique [0002] As people's requirements for medical technology are getting higher and higher, traditional surgical operations are developing in the direction of smaller wounds and less bleeding, which promotes the update of medical equipment technology. Such as digital subtraction and interventional surgery, endoscopic technology and endoscopic surgery, ultrasonic technology and ultrasonic knife, etc. In particular, the ultrasonic scalpel technology can make the operation more precise, avoid eschar formation, and have a clearer intraoperative field of view, and is widely used in surgical operations. [0003] Since the 1990s, ultrasonic surgery has been widely used in the field of biomedicine. The development of efficient and flexible ultrasoni...

Claims

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Application Information

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IPC IPC(8): C22F1/18
CPCC22F1/002C22F1/183
Inventor 李益民何哲宇
Owner HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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